These fine-point pens feature waterproof, quick drying pigmented ink for permanency and true color reproduction. Use for graphics, drafting, illustration or accounting. Experience smooth, skip-free writing and crisp ink colors that leave consistent lettering and lines every time. The archival ink is chemically stable and fade resistant. It does not smear, feather or bleed-through on most papers. Choose from a range of seven nib sizes including 003 (.15mm) 005 (.20mm), 01 (.25mm), 02 (.30mm), 03 (.35mm), 05 (.45mm) and 08 (.50mm). Will not smear Archival, lightfast and permanent Bleedproof on most papers